Assuming your keyboard has a 'Windows Button' (usually bottom left between Ctrl & Alt) press that and 'L'....this will lock your workstation.
For Windows XP, Vista, and 7, the "logon screen" or Welcome Screen. In Windows 8, it's the "Lock Screen".
By getting a Windows machine
depends on which o.s(operating system example linux, xp, vista and so on...) you are running
Windows 98: You can't (using the Operating System) Windows 2000: CTL+ALT+DEL then choose "Lock Computer" Windows XP: Same as Windows 2000 or use shortcut Windows Key + L
http://www.youtube.com/watch?v=mu5hlsn2Kf8 No more trouble now. Works on Windows 7 as well!
Ubuntu is a free and open-source desktop operating system. It is designed to allow you to allow you to do the things you would normally do with a desktop, but without vendor lock-in like you would have on Windows, or even Mac OS X.
Try to play with Parent Control in Control Panel. It might help.
To locate the Windows screensaver settings, right-click on the desktop, select "Personalize," then click on "Lock screen" and finally choose "Screen saver settings" at the bottom of the window.
The TPM chip is used to hold the encryption key for Windows Vista BitLocker Encryption. You can lock down a workstation using Windows. Press the
Their are severals method for doing this which are as follows: (A) Desktop lock 7.2 -{desktop,mouse, keyboard etc} (B)Code projet (C) Softheap password-securitry (D) Create an hotmail shotcut on your desktop (E)FILE LOCK SOFT WARE ETC
Casement windows lock, they do not slide.
Install Vitamin D Video it can set off a sound deterrent if you have a webcam otherwise simply add a password to your user account and lock your computer Instructions: Lock my computer: Windows/7/vista, Control+Alt+Delete and press lock this computer